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. 2019 Jul 19;10:946. doi: 10.3389/fpls.2019.00946

FIGURE 6.

FIGURE 6

Quantitative real time RT-PCR analyses of VvCTr genes in Fercal rootstock plants. Root apex genes expression of VvCTr1 (A), VvCTr2 (B), VvCTr3 (C), VvCTr4 (D), VvCTr6 (E), and VvCTr8 (F) determined in mono- and intercropped Fercal rootstocks. Transcripts levels are reported as relative amount of transcripts referred to the gene expression of monocropped rootstocks grown at 0.2 μM Cu. The data are reported as means ± SE of three biological replicates. Different letters indicate significantly different values as determined using one-way ANOVA with Tukey post hoc tests (p < 0.05). Lower case letters indicate the statistical significance for monocropped plants in the different Cu concentrations, whilst upper case letters indicate the statistical significance for intercropped plants grown in the different Cu concentrations. Stars indicate the significance (Student’s t-test) between the gene expression of mono- and intercropped rootstocks (* p < 0.05; ∗∗ p < 0.01; ∗∗∗ p < 0.001).